The primary inclosure containing a drying agent such as silica gel or activated alumina.
NSN 5950-00-562-4311
NSN 6650-01-341-1670
NSN 6145-00-647-3660
NSN 6645-01-111-1144
NSN 4140-00-923-6528
NSN 5990-00-910-5875
NSN 6620-01-330-8802
NSN 5925-01-188-7630
NSN 5930-01-026-9757
NSN 5985-01-052-5186
NSN 6105-00-997-3212
NSN 5935-01-302-3346